Home / 12,420,805.20-18,631,207.80-3,902,002.80

Finding the Fourth Proportional to 12,420,805.20, 18,631,207.80 and 3,902,002.80

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Solution

The fourth proportional to 12,420,805.20, 18,631,207.80 and 3,902,002.80 is: 5,853,004.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,420,805.20 : 18,631,207.80 = 3,902,002.80 : x
  2. Step 2: Convert to fraction form
    12,420,805.20/18,631,207.80 = 3,902,002.80/x
  3. Step 3: Cross multiply
    12,420,805.20x = 18,631,207.80 × 3,902,002.80
  4. Step 4: Simplify right side
    12,420,805.20x = 72,699,025,002,981.84
  5. Step 5: Solve for x
    x = 72,699,025,002,981.84/12,420,805.20
  6. Step 6: Final answer
    x = 5,853,004.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.